2 * Sparc register context support
4 * Copyright (C) 2000 Ulrich Weigand
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
27 #include <sys/types.h>
33 #ifdef HAVE_SYS_PTRACE_H
34 # include <sys/ptrace.h>
43 #if 0 /* no longer used */
45 #if defined(__sun) || defined(__sun__)
47 /* retrieve a thread context */
48 static void get_thread_context_ptrace( struct thread *thread, unsigned int flags, CONTEXT *context )
50 int pid = get_ptrace_pid(thread);
51 if (flags & CONTEXT_FULL)
54 if (ptrace( PTRACE_GETREGS, pid, 0, (int) ®s ) == -1) goto error;
55 if (flags & CONTEXT_INTEGER)
58 context->g1 = regs.r_g1;
59 context->g2 = regs.r_g2;
60 context->g3 = regs.r_g3;
61 context->g4 = regs.r_g4;
62 context->g5 = regs.r_g5;
63 context->g6 = regs.r_g6;
64 context->g7 = regs.r_g7;
66 context->o0 = regs.r_o0;
67 context->o1 = regs.r_o1;
68 context->o2 = regs.r_o2;
69 context->o3 = regs.r_o3;
70 context->o4 = regs.r_o4;
71 context->o5 = regs.r_o5;
72 context->o6 = regs.r_o6;
73 context->o7 = regs.r_o7;
75 /* FIXME: local and in registers */
77 if (flags & CONTEXT_CONTROL)
79 context->psr = regs.r_psr;
80 context->pc = regs.r_pc;
81 context->npc = regs.r_npc;
82 context->y = regs.r_y;
83 context->wim = 0; /* FIXME */
84 context->tbr = 0; /* FIXME */
86 context |= flags & (CONTEXT_CONTROL|CONTEXT_INTEGER);
88 if (flags & CONTEXT_FLOATING_POINT)
98 /* set a thread context */
99 static void set_thread_context_ptrace( struct thread *thread, unsigned int flags, const CONTEXT *context )
105 #error You must implement get/set_thread_context_ptrace for your platform
110 /* copy a context structure according to the flags */
111 void copy_context( CONTEXT *to, const CONTEXT *from, unsigned int flags )
113 flags &= ~CONTEXT_SPARC; /* get rid of CPU id */
114 if (flags & CONTEXT_CONTROL)
123 if (flags & CONTEXT_INTEGER)
158 if (flags & CONTEXT_FLOATING_POINT)
162 context |= flags & (CONTEXT_CONTROL|CONTEXT_INTEGER);
165 /* retrieve the current instruction pointer of a context */
166 void *get_context_ip( const CONTEXT *context )
168 return (void *)context->pc;
171 /* return the context flag that contains the CPU id */
172 unsigned int get_context_cpu_flag(void)
174 return CONTEXT_SPARC;
177 /* return only the context flags that correspond to system regs */
178 /* (system regs are the ones we can't access on the client side) */
179 unsigned int get_context_system_regs( unsigned int flags )
181 return 0; /* FIXME: implement client-side handling */
184 #endif /* __sparc__ */